摘要
报道了Ln(p-ABA)_3bpy·2H_2O(Ln=Nd,Eu,Yb)的合成和晶体结构、拉曼光谱及荧光光谱的测定。晶体属三斜晶系,P(?)空间群。中心原子配位数为8。羧基具有单齿、螯合双齿和桥式3种配位方式。配合物的拉曼光谱与晶体结构测定结果吻合。Eu(p-ABA)_3bpy·2H_O的高分辨激发光谱和发射光谱表明,Eu(Ⅲ)离子仅有一种晶格格位,中心离子具有C_1格位对称性。
Syntheses of Ln(p-ABA)3bpy·2H2O(Ln = Nd, Eu, Yb, p-ABA: p-aminoben-zoate, bpy: bipyridine) and their crystal structure, Raman and fluorescence spectra are re-ported. The crystal belongs to triclinic system with space group PL The coordination number of the central atom is eight. There are three coordinated modes for carboxylate groups: unidentate, bidentate and bridged. Raman spectra of the complexes indicate that there are more than one coordinated modes for the carboxylate groups. This is in good agreement with the result of X-ray analysis. The high resolution spectra of Eu(p-ABA)3bpy·2H2O show only one Eu(Ⅲ) ion site in the complex. The symmetry for the Eu(Ⅲ) site is C1.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第7期1007-1011,共5页
Chemical Journal of Chinese Universities
基金
国家科学技术委员会重大基础研究基金
中国科学院长春物理研究所激发态物理开放实验室资助课题
关键词
配合物
晶体结构
稀土
钕
铕
镱
合成
Lanthanide complexes, Crystal structure, Raman spectra, Fluorescence spectra
